Harmony Gold Mining Co (NYSE: HMY ) reported a 25% drop in its first-half profit. Harmony's headline profit fell to $143 million, from $191 million, in the year-ago period. Its operating profit declined to $360 million from $396 million. Harmony Gold shares dropped 0.45% to $6.5302 in after-hours trading. (c) 2013 Benzinga.com.